How many mL of 10. molar HCl is needed to make up a 200 mL solution oF₄.0 molar HCl?

Question

Quizplus · Accepted Answer

To make a 200 mL solution of 0.1 molar HCl, we need to use the formula:

M1V1 = M2V2

where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

Rearranging the formula to solve for V1, we get:

V1 = (M2V2)/M1

Plugging in the values we know, we get:

V1 = (0.1 mol/L)(0.2 L) / 10 mol/L = 0.002 L = 2 mL

So we need 2 mL of 10.0 molar HCl to make a 200 mL solution of 0.1 molar HCl. However, we need to be careful because we are working with a concentrated acid that can be dangerous if not handled properly. To dilute the acid, we should add the acid slowly to the water while stirring constantly, and we should wear appropriate safety equipment such as gloves and eye protection.

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